Achieving Precise Two Way Stretch in Square and Round Products

2026-03-29

Written by

Erwin

Automation Engineer

The second generation of engineers are skilled in the entire process of developing and debugging automated systems, solving complex technical problems in production, and combining industry trends to iterate solutions. They can design automated systems to reduce costs and improve efficiency.

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Complex geometries like square meal boxes and round flower pots require precise two-way stretch capabilities. Wenzhou Rayshape Machinery Co., Ltd., an Elemotion Group subsidiary, uses internationally advanced plastic sheet forming technology to achieve this in our Plastic Thermoforming Machine.

The four-column support and five-point structural connecting rod provide the mechanical stability needed for uniform wall thickness in high-stretch products. Our machine handles materials such as A-PET, BOPS, and PP with ease.

With a four-stage heating furnace that minimizes temperature fluctuations to $\pm 1$ °C, we ensure that every product, from nursery plates to fruit boxes, is formed perfectly. Rayshape is a leading enterprise in Wenzhou, dedicated to providing energy-saving and high-quality automated equipment for the global market.

Plastic Thermoforming Machine

Four-Station Plastic forming machine

Model：RS-750-800-4

RS-750-800-4 positive and negative pressure multi-station plastic thermoforming machine， uses internationally advanced plastic sheet forming technology. It is a plastic sheet forming equipment with mechanical, pneumatic and electrical integrated design. It can automatically complete all actions such as loading, feeding, heating, forming, punching, cutting, stacking, finished product tr...

Three-Station Plastic Thermoforming Machine

Model：RS-750-800-3

RS-750-800-3 positive and negative pressure multi-station plastic thermoforming machine， uses internationally advanced plastic sheet forming technology. It is a plastic sheet forming equipment with mechanical, pneumatic and electrical integrated design. It can automatically complete all actions such as loading, feeding, heating, forming, punching, cutting, stacking, finished product tr...

Four-Station Plastic Thermoforming Machine

Model：RS-750-610-4

RS-730-610-4 positive and negative pressure multi-station plastic thermoforming machine， uses internationally advanced plastic sheet forming technology. It is a plastic sheet forming equipment with mechanical, pneumatic and electrical integrated design. It can automatically complete all actions such as loading, feeding, heating, forming, punching, cutting, stacking, finished product tr...

Four-Station Plastic Thermoforming Machine

Model：RS-650-450-4

RS-650-450-4 positive and negative pressure multi-station plastic thermoforming machine， uses internationally advanced plastic sheet forming technology. It is a plastic sheet forming equipment with mechanical, pneumatic and electrical integrated design. It can automatically complete all actions such as loading, feeding, heating, forming, punching, cutting, stacking, finished product tr...

Advantages Of Plastic Thermoforming Machines

Loading sheet part

Load automatically, lower human resource cost.

Proximity switch clever control, getting the rid of falling down of the sheet by conveying too fast.

Double stations, big diameter, reduce the frequency of changing sheet coil, improve the the production efficiency.

Max undertake roll of sheet

Weight:600kg, Diameter 800mm.

Feeding sheet part

Automatic feeding reduces human resource costs.

Actively transport the sheet and reduce the load on the conveying servo motor.

Cleverly control the proximity switch to prevent the sheet from falling too quickly during transportation.

Human-machine interface

Controlled by microcomputer and programmable controller (PLC), all action programs can be operated through the human-machine interface, simple and convenient, 15-inch touch screen.

Heater

1. Vacuum insulation cotton is installed in the heater, which has a fast reaction speed, short processing time and energy saving.

2. The furnace body is divided into two layers, the layout of the heating tiles is optimized, so that the plate is heated evenly.

Molding station

1. Mold changing auxiliary mechanism, using sliding guide rails and support rods to achieve fast mold change, saving time and effort.

2. Adopting high-power servo motor drive, high precision, high efficiency and low noise.

Molding mold

The working principle is a combination of positive and negative pressure, and some nylon plugs are used to assist stretching in the mold to make it have stronger molding ability.

There is cooling water in the mold cavity to speed up the cooling speed and make demolding easier.

Guide head structure

The workstation is supported by four columns (45# steel, hard chrome plated).

The integrated mold table (QT-600 steel) is made by a high-precision CNC milling machine. Therefore, it is wear-resistant, stable, and accurate, which prolongs the service life of the equipment.

A five-point-connecting-rod structure

This structure design provides more stable operation and faster speed.

Mold change structure

The punching hole station has the same mold changing structure as the cutting station.Greatly reduce mold change time and labor costs, improve production efficiency and safety factor, and provide convenience for your diversified product chain.

Servo motor

The station mold closing, forming auxiliary stretching, and pull-tab parts are all driven by servo motors, which have fast speed, low noise, high precision, and high efficiency.

Servo-controlled conveyor belt

Set conveyor belt parameters directly on the operation screen.

Freely adjust and control conveying length and speed.

Rewinding waste of edge sheet

Our multi-station thermoformers feature a winding unit with torque motor to efficiently collect the offcuts and wind them into a roll with one side retractable, which can be conveniently removed at the end of production.

This advanced waste management system improves operating efficiency and cleanliness, making multi-station thermoformers ideal for high-quality and sustainable production.

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